Update runner_build.md (#657)

Change doc to use tokenizer.model

Author: metascroy

docs/runner_build.md

@@ -63,8 +63,8 @@ python3 torchchat.py export stories15M --output-dso-path ./model.so
 We can now execute the runner with:
 
 ```
-wget -O ./tokenizer.bin https://github.com/karpathy/llama2.c/raw/master/tokenizer.bin
-./cmake-out/aoti_run ./model.so -z ./tokenizer.bin -l 2 -i "Once upon a time"
+wget -O ./tokenizer.model https://github.com/karpathy/llama2.c/raw/master/tokenizer.model
+./cmake-out/aoti_run ./model.so -z ./tokenizer.model -l 2 -i "Once upon a time"
 ```
 
 The `-l 2` indicates that the model and tokenizer use the llama2 architecture.  If your model is based on llama3, use `-l 3`.
@@ -104,8 +104,8 @@ python3 torchchat.py export stories15M --output-pte-path ./model.pte
 We can now execute the runner with:
 
 ```
-wget -O ./tokenizer.bin https://github.com/karpathy/llama2.c/raw/master/tokenizer.bin
-./cmake-out/et_run ./model.pte -z ./tokenizer.bin -l 2 -i "Once upon a time"
+wget -O ./tokenizer.model https://github.com/karpathy/llama2.c/raw/master/tokenizer.model
+./cmake-out/et_run ./model.pte -z ./tokenizer.model -l 2 -i "Once upon a time"
 ```
 
 The `-l 2` indicates that the model and tokenizer use the llama2 architecture.  If your model is based on llama3, use `-l 3`.